Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas vezes a Universidade Anderson saiu?
 ###Tabelas: CREATE TABLE opinion_poll_summary (opinion_poll_summary_id AUTO_INCREMENT PRIMARY KEY, Party VARCHAR, Marplan VARCHAR, Gallup VARCHAR, National Opinion Polls (NOP) VARCHAR, Opinion Research Centre (OPC) VARCHAR, Harris VARCHAR) CREATE TABLE results_of_the_individual_jury_and_televote_results_in_the_final (results_of_the_individual_jury_and_televote_results_in_the_final_id AUTO_INCREMENT PRIMARY KEY, Draw INT, Televote Points VARCHAR, Jury Points VARCHAR, Total VARCHAR, Final Points VARCHAR) CREATE TABLE championship_of_tunisia (championship_of_tunisia_id AUTO_INCREMENT PRIMARY KEY, Season INT, Years VARCHAR, Final Standing INT, Points INT, Top Goal Scorer VARCHAR) CREATE TABLE theater_credits (theater_credits_id AUTO_INCREMENT PRIMARY KEY, Year INT, Play VARCHAR, Role VARCHAR, Theatre VARCHAR, Location VARCHAR) CREATE TABLE former_members (former_members_id AUTO_INCREMENT PRIMARY KEY, Institution VARCHAR, Location VARCHAR, Founded INT, Type VARCHAR, Enrollment INT, Nickname VARCHAR, Joined INT, Left INT, Current Conference VARCHAR)  
SELECT COUNT Left FROM former_members WHERE Institution = Anderson University